Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 1 | /* exynos_drm_gem.h |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * Authoer: Inki Dae <inki.dae@samsung.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the next |
| 14 | * paragraph) shall be included in all copies or substantial portions of the |
| 15 | * Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 23 | * OTHER DEALINGS IN THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #ifndef _EXYNOS_DRM_GEM_H_ |
| 27 | #define _EXYNOS_DRM_GEM_H_ |
| 28 | |
| 29 | #define to_exynos_gem_obj(x) container_of(x,\ |
| 30 | struct exynos_drm_gem_obj, base) |
| 31 | |
Inki Dae | dcf9af8 | 2012-04-03 21:27:58 +0900 | [diff] [blame] | 32 | #define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG) |
| 33 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 34 | /* |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 35 | * exynos drm gem buffer structure. |
| 36 | * |
| 37 | * @kvaddr: kernel virtual address to allocated memory region. |
| 38 | * @dma_addr: bus address(accessed by dma) to allocated memory region. |
| 39 | * - this address could be physical address without IOMMU and |
| 40 | * device address with IOMMU. |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 41 | * @sgt: sg table to transfer page data. |
| 42 | * @pages: contain all pages to allocated memory region. |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 43 | * @page_size: could be 4K, 64K or 1MB. |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 44 | * @size: size of allocated memory region. |
| 45 | */ |
| 46 | struct exynos_drm_gem_buf { |
| 47 | void __iomem *kvaddr; |
| 48 | dma_addr_t dma_addr; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 49 | struct sg_table *sgt; |
| 50 | struct page **pages; |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 51 | unsigned long page_size; |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 52 | unsigned long size; |
| 53 | }; |
| 54 | |
| 55 | /* |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 56 | * exynos drm buffer structure. |
| 57 | * |
| 58 | * @base: a gem object. |
| 59 | * - a new handle to this gem object would be created |
| 60 | * by drm_gem_handle_create(). |
Inki Dae | 2c87112 | 2011-11-12 15:23:32 +0900 | [diff] [blame] | 61 | * @buffer: a pointer to exynos_drm_gem_buffer object. |
| 62 | * - contain the information to memory region allocated |
| 63 | * by user request or at framebuffer creation. |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 64 | * continuous memory region allocated by user request |
| 65 | * or at framebuffer creation. |
Inki Dae | 3c52b88 | 2012-06-29 16:28:17 +0900 | [diff] [blame] | 66 | * @size: size requested from user, in bytes and this size is aligned |
| 67 | * in page unit. |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 68 | * @flags: indicate memory type to allocated buffer and cache attruibute. |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 69 | * |
| 70 | * P.S. this object would be transfered to user as kms_bo.handle so |
| 71 | * user can access the buffer through kms_bo.handle. |
| 72 | */ |
| 73 | struct exynos_drm_gem_obj { |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 74 | struct drm_gem_object base; |
| 75 | struct exynos_drm_gem_buf *buffer; |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 76 | unsigned long size; |
| 77 | unsigned int flags; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 78 | }; |
| 79 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 80 | struct page **exynos_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask); |
| 81 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 82 | /* destroy a buffer with gem object */ |
| 83 | void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj); |
| 84 | |
Inki Dae | b2df26c | 2012-04-23 21:01:28 +0900 | [diff] [blame] | 85 | /* create a private gem object and initialize it. */ |
| 86 | struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev, |
| 87 | unsigned long size); |
| 88 | |
Joonyoung Shim | 2364839 | 2011-12-13 14:39:13 +0900 | [diff] [blame] | 89 | /* create a new buffer with gem object */ |
Inki Dae | f088d5a | 2011-11-12 14:51:23 +0900 | [diff] [blame] | 90 | struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, |
Inki Dae | 2b35892 | 2012-03-16 18:47:05 +0900 | [diff] [blame] | 91 | unsigned int flags, |
| 92 | unsigned long size); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 93 | |
| 94 | /* |
| 95 | * request gem object creation and buffer allocation as the size |
| 96 | * that it is calculated with framebuffer information such as width, |
| 97 | * height and bpp. |
| 98 | */ |
| 99 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 100 | struct drm_file *file_priv); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 101 | |
Inki Dae | f0b1bda | 2012-03-16 18:47:06 +0900 | [diff] [blame] | 102 | /* |
| 103 | * get dma address from gem handle and this function could be used for |
| 104 | * other drivers such as 2d/3d acceleration drivers. |
| 105 | * with this function call, gem object reference count would be increased. |
| 106 | */ |
| 107 | void *exynos_drm_gem_get_dma_addr(struct drm_device *dev, |
| 108 | unsigned int gem_handle, |
| 109 | struct drm_file *file_priv); |
| 110 | |
| 111 | /* |
| 112 | * put dma address from gem handle and this function could be used for |
| 113 | * other drivers such as 2d/3d acceleration drivers. |
| 114 | * with this function call, gem object reference count would be decreased. |
| 115 | */ |
| 116 | void exynos_drm_gem_put_dma_addr(struct drm_device *dev, |
| 117 | unsigned int gem_handle, |
| 118 | struct drm_file *file_priv); |
| 119 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 120 | /* get buffer offset to map to user space. */ |
| 121 | int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 122 | struct drm_file *file_priv); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 123 | |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 124 | /* |
| 125 | * mmap the physically continuous memory that a gem object contains |
| 126 | * to user space. |
| 127 | */ |
| 128 | int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, |
| 129 | struct drm_file *file_priv); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 130 | |
Inki Dae | 40cd7e0 | 2012-05-04 15:51:17 +0900 | [diff] [blame] | 131 | /* get buffer information to memory region allocated by gem. */ |
| 132 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, |
| 133 | struct drm_file *file_priv); |
| 134 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 135 | /* initialize gem object. */ |
| 136 | int exynos_drm_gem_init_object(struct drm_gem_object *obj); |
| 137 | |
| 138 | /* free gem object. */ |
| 139 | void exynos_drm_gem_free_object(struct drm_gem_object *gem_obj); |
| 140 | |
| 141 | /* create memory region for drm framebuffer. */ |
| 142 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 143 | struct drm_device *dev, |
| 144 | struct drm_mode_create_dumb *args); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 145 | |
| 146 | /* map memory region for drm framebuffer to user space. */ |
| 147 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 148 | struct drm_device *dev, uint32_t handle, |
| 149 | uint64_t *offset); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 150 | |
| 151 | /* |
| 152 | * destroy memory region allocated. |
| 153 | * - a gem handle and physical memory region pointed by a gem object |
| 154 | * would be released by drm_gem_handle_delete(). |
| 155 | */ |
| 156 | int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, |
Joonyoung Shim | ee5e770 | 2011-12-13 14:20:23 +0900 | [diff] [blame] | 157 | struct drm_device *dev, |
| 158 | unsigned int handle); |
| 159 | |
| 160 | /* page fault handler and mmap fault address(virtual) to physical memory. */ |
| 161 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); |
| 162 | |
| 163 | /* set vm_flags and we can change the vm attribute to other one at here. */ |
| 164 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 165 | |
| 166 | #endif |